As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK LEAKING BETWEEN HEAT EXCHANGER AND PLENUM. REMOVED LT ACM IAW MM 21-51-04-000-802-002. REMOVED LT HEAT EXCHANGER/PLENUM ASSY IAW MM 21-51-03-000-805-002. REPLACED BOTH (2) PRIMARY AND SECONDARY HEAT EXCHANGERS ASSY IAW MM 21-51-03-400-804-002. REASSEMBLED LT PACK ASSY AND REINSTALLED. ACCOMPLISHED INSTALLATION TEST IAW MM 21-51-03-400-804-002. NO LEAKS FOUND.